Snort no fort, could be mugged by bug
The open-source intrusion detection system could be used to run malware
Computerworld - A flaw in Snort, the popular open-source intrusion detection system, could be used by attackers to run malicious code on vulnerable machines, several security organizations reported yesterday.
The stack buffer overflow bug is in the Snort (or Sourcefire) DCE/RPC preprocessor, said Neel Mehta, a member of IBM's Internet Security Systems X-Force research team. Mehta discovered the vulnerability, which could result in compromised or hijacked computers.
Danish vulnerability tracker Secunia rated the threat as "highly critical," the second-most-serious ranking in its 1-through-5 scoring system.
Several versions of Snort, which is the foundation of Sourcefire's security appliance line, are at risk, according to other advisories posted by US-CERT and the SANS Institute's Internet Storm Center. The vulnerable versions include Snort 2.6.1, 18.104.22.168, 22.214.171.124, and 2.7.0 Beta 1.
Sourcefire urged users of Snort 2.6.1.x to update to Version 126.96.36.199 "immediately"; if upgrading isn't feasible, the DCE/RPC preprocessor should be disabled. Instructions for disabling the preprocessor are available online.
No working exploit for the vulnerability has been spotted yet, Sourcefire said.
Read more about Security in Computerworld's Security Topic Center.
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